WO2020170832A1

WO2020170832A1 - Blood bag system and clamp

Info

Publication number: WO2020170832A1
Application number: PCT/JP2020/004484
Authority: WO
Inventors: 中野将識
Original assignee: テルモ株式会社
Priority date: 2019-02-20
Filing date: 2020-02-06
Publication date: 2020-08-27
Also published as: JPWO2020170832A1; US20220016323A1; EP3922298B1; EP3922298A4; EP3922298A1; CN113474036A; JP6865327B2

Abstract

A blood bag system (10) comprises one clamp (43). The clamp (43) comprises a base (92) in which are formed insertion holes (90) through which a second tube (36) and a third tube (38) are inserted. A first slit (104) for compressing the outer circumferential surface of the second tube (36) inward so that a second flow channel (36a) is closed off, and a second slit (106) for compressing the outer circumferential surface of the third tube (38) inward so that a third flow channel (38a) is closed off, are provided in a wall section in which the through-holes (90) are formed.

Description

Blood bag system and clamp

The present invention relates to blood bag systems and clamps.

For example, in JP-A-2016-106012, a first bag (parent bag) for containing blood and a second bag for containing a blood component obtained by centrifuging blood in the first bag are disclosed. A blood bag system including a bag (child bag) and a third bag (medical solution bag) containing an additive solution is disclosed.

The first tube connected to the first bag is connected to the second tube connected to the second bag and the third tube connected to the third bag via a branch portion.

In the blood bag system as described above, the blood bag system is set in the centrifugal transfer device and the blood in the first bag is centrifuged. Then, the blood component obtained by centrifugation is transferred from the first bag to the second bag via the first tube and the second tube. Then, the blood bag system is removed from the centrifugal transfer device with the first clamp blocking the flow path of the second tube and the second clamp closing the flow path of the third tube. Subsequently, the third bag is hung on a suspension base, the second clamp is removed from the third tube, and an additive solution such as a red blood cell preservation solution is transferred to the first bag via the third tube and the first tube.

In this way, if the first clamp for closing the flow path of the second tube and the second clamp for closing the flow path of the third tube are separate parts, the two tubes (second There is a possibility that the respective flow paths of the tube and the third tube cannot be effectively blocked.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a blood bag system and a clamp that can effectively block respective flow paths of two tubes with one clamp. And

One embodiment of the present invention includes a first bag for containing blood, a second bag for containing a blood component obtained by centrifuging blood in the first bag, and an additive solution. And a third bag, wherein the first tube connected to the first bag has a branch portion for the second tube connected to the second bag and the third tube connected to the third bag. A blood bag system connected via an interposer, comprising: one clamp capable of closing the respective flow paths of the second tube and the third tube, wherein the clamp includes the second tube and the third tube. There is a base portion having an inserted insertion hole formed therein, and a wall portion forming the insertion hole has an outer peripheral surface of the second tube facing inward so that a flow path of the second tube is closed. A blood bag provided with a first slit for pressing and a second slit for pressing the outer peripheral surface of the third tube inward so that the flow path of the third tube is closed. System.

Another aspect of the present invention is that a first bag for containing blood, a second bag for containing a blood component obtained by centrifuging the blood in the first bag, and an additive solution are contained. A third tube, a first tube having one end connected to the first bag and the other end connected to a branch portion, a second tube connecting the branch portion and the second bag, and the branch In a blood bag system comprising a section and a third tube connecting the third bag, a clamp capable of closing the respective flow paths of the second tube and the third tube, wherein the second tube and the third tube An outer peripheral surface of the second tube has a base portion formed with an insertion hole through which the third tube is inserted, and a wall portion forming the insertion hole so that the flow path of the second tube is closed. A first slit for pressing the inner side of the third tube, and a second slit for pressing the outer peripheral surface of the third tube inward so that the flow path of the third tube is closed. It is a clamp.

According to the present invention, the second tube and the third tube are inserted into the insertion hole formed in the base portion, and the wall portion forming the insertion hole is provided with the first slit and the second slit. The respective channels of the second tube and the third tube can be efficiently blocked by the clamp.

It is explanatory drawing which shows the whole structure of the blood bag system and the centrifugation transfer apparatus which concern on one Embodiment of this invention. It is a top view which shows the unit set area of a centrifugal separation transfer apparatus. 3A is a perspective explanatory view of the clamp of FIG. 1, and FIG. 3B is a plan explanatory view of the clamp of FIG. 1. It is explanatory drawing of the procedure which transfers a red blood cell preservation solution from a chemical|medical solution bag to a blood bag. 5A is a plan explanatory view of a first slit according to a first configuration example, FIG. 5B is a plan explanatory diagram of a first slit according to a second configuration example, and FIG. 5C is related to a third configuration example. It is a plane explanatory view of the 1st slit. FIG. 6A is an explanatory plan view of the first slit according to the fourth configuration example, and FIG. 6B is an explanatory plan view of the first slit according to the fifth configuration example. It is a plane explanatory view of the clamp concerning the 1st modification. 8A is a perspective explanatory view of a clamp according to a second modified example, FIG. 8B is a plan explanatory view of the clamp of FIG. 8A, and FIG. 8C is a configuration example of an operation portion forming the clamp of FIG. 8A. FIG. It is a plane explanatory view of the clamp concerning the 3rd modification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The blood bag system 10 according to the embodiment of the present invention is set by a user such as a medical staff in the centrifugal separation and transfer device 12 as shown in FIG. The centrifugal transfer device 12 centrifuges the blood in the blood bag system 10 to generate and store a plurality of types of blood components. Hereinafter, the configuration including the blood bag system 10 and the centrifugal transfer device 12 is referred to as a blood product manufacturing system 14.

The blood bag system 10 includes a pretreatment unit (not shown) used for collecting blood before centrifugation, and a separation treatment unit 16 that generates blood components by centrifugation and stores the blood components individually. Are connected with. Before the centrifugal separation, the separation processing unit 16 is set to the centrifugal transfer device 12 by cutting the relay tube 18 connected to the pre-processing unit to the state shown in FIG.

The pretreatment unit of the blood bag system 10 collects whole blood from a donor (donor) and removes a predetermined blood component (for example, white blood cell) from the whole blood. Therefore, the pretreatment unit has a blood collection needle, a blood collection bag, an initial flow blood bag, a filter (for example, a leukocyte removal filter), etc., and is configured by connecting each member with a plurality of tubes. The separation processing unit 16 is connected to the downstream side of the filter via a relay tube 18. Specifically, the pretreatment unit stores the first blood of the whole blood of the donor collected through the blood collection needle in the initial flow blood bag, and thereafter stores the remaining blood in the blood collection bag. Furthermore, the pretreatment unit removes leukocytes in the filter by causing the whole blood stored in the blood collection bag to flow through the filter, and transfers the removed blood (leukocyte-removed blood) to the separation processing unit 16.

On the other hand, the separation processing unit 16 of the blood bag system 10 has a plurality of bags 20 (blood bag 22, PPP bag 24, and drug solution bag 26) and is configured by connecting the bags 20 with a plurality of tubes 30. ..

The blood bag 22 (first bag) is directly connected to the relay tube 18 connected to the pretreatment unit in the product providing state of the blood bag system 10. Therefore, the blood bag 22 stores the removed blood transferred from the filter during blood collection. The blood bag 22 is set in the centrifugal transfer device 12, and a centrifugal force is applied by the operation of the centrifugal transfer device 12. As a result, the blood removed from the blood bag 22 is centrifuged into blood components having different specific gravities (platelet poor plasma (PPP), concentrated red blood cells (RBC)) and the like. Then, the blood bag 22 stores only the remaining RBCs by transferring the PPP under the operation of the centrifugal separation transfer device 12 after the centrifugal separation.

The PPP bag 24 (second bag) is supplied with the PPP from the blood bag 22 to store the PPP. On the other hand, the drug solution bag 26 (third bag) contains a red blood cell preservation solution (addition solution) such as a MAP solution, a SAGM solution, and OPTISOL in advance.

Further, in the separation processing unit 16, the segment tube 28 is formed before being set in the centrifugal separation transfer device 12. The segment tube 28 has a plurality of closed tubes 28a in which donor blood (removed blood) is present. The plurality of closed tubes 28a are connected in series by disconnecting the relay tube 18 that was connected between the blood bag 22 and the pretreatment unit (filter) near the filter and further sealing at predetermined intervals. It is formed. The segment tube 28 is cut off by the user as needed and used for checking blood or the like.

The plurality of tubes 30 of the separation processing section 16 are branched into a plurality of pieces via a branch connector 32 (Y-type connector) as a branch section. Specifically, the plurality of tubes 30 connect the blood bag 22 and the branch connector 32 to the first tube 34, the PPP bag 24 and the branch connector 32 to connect the second tube 36, and the drug solution bag 26 and the branch connector 32 to each other. A third tube 38 for The first tube 34 has a first flow path 34a, the second tube 36 has a second flow path 36a, and the third tube 38 has a third flow path 38a. Each of the first tube 34, the second tube 36, and the third tube 38 has flexibility. The first flow path 34a, the second flow path 36a, and the third flow path 38a communicate with each other via the flow path inside the branch connector 32.

A rupturable sealing member 40 (click tip) is provided at the end of the first tube 34 on the blood bag 22 side. Similarly, a rupturable sealing member 42 is provided at the end portion of the third tube 38 on the chemical solution bag 26 side. The sealing

members

40 and 42 block the first flow path 34a and the third flow path 38a until the breaking operation is performed, and prevent the liquid in the blood bag 22 or the drug solution bag 26 from being transferred to another bag 20. To do.

The separation processing unit 16 has a clamp 43 that closes at least the respective flow paths (the second flow path 36a and the third flow path 38a) of the second tube 36 and the third tube 38. The configuration of the clamp 43 will be described later.

On the other hand, the centrifugal separation transfer device 12 in which the separation processing unit 16 of the blood bag system 10 is set includes a box-shaped base body 44, a lid 46 capable of opening and closing the upper surface of the base body 44, and a centrifugal drum 48 provided on the base body 44. Equipped with. Further, a motor (not shown) for rotating the centrifugal drum 48, a control unit 50 for controlling the operation of the centrifugal transfer device 12, and an operation for the user to confirm and operate the base 44 of the centrifugal transfer device 12. A display unit 52 is provided.

The centrifugal drum 48 has a plurality (six) of unit set areas 54 in which the separation processing section 16 can be set. The height of one unit set area 54 is longer than the length of the bag 20 in the longitudinal direction, and is set within a range of 60° with respect to the rotation center of the centrifugal drum 48. That is, the six unit set areas 54 form the centrifugal drum 48 that is an annular structure by arranging the six unit set areas 54 in the circumferential direction without a gap.

As shown in FIGS. 1 and 2, the unit set area 54 applies a centrifugal force to the blood bag 22 as the centrifugal drum 48 rotates. Specifically, the unit set area 54 includes a blood bag pocket 56 containing the blood bag 22, a PPP bag pocket 58 containing the PPP bag 24, and a drug solution bag pocket 60 containing the drug solution bag 26 in the centrifugal drum 48. At the radially outer position of.

The blood bag pocket 56 is provided in the central portion in the circumferential direction of the unit set area 54 and has a larger volume than the PPP bag pocket 58 and the drug solution bag pocket 60. The PPP bag pocket 58 and the drug solution bag pocket 60 are arranged side by side in the circumferential direction on the radially outer side of the blood bag pocket 56.

Further, the upper surface 54a of the unit set area 54 is configured to arrange and hold the plurality of tubes 30 of the blood bag system 10. A part of the first tube 34 and the segment tube 28 is arranged in a central region 54a1 (first region) radially inward of the blood bag pocket 56 on the upper surface 54a. Further, a lid 62 for opening and closing the opening of the blood bag pocket 56 is provided in the central region 54a1. Further, at the position where the first tube 34 is closed by the lid 62, a part of the breakage portion 64 that breaks the sealing member 40 and a sensor 66 (optical sensor) that detects the state of blood flowing in the first tube 34. ) Is provided.

In the left area 54a2 (second area) of the upper surface 54a, a part of the first tube 34 passing through the central area 54a1, a branch connector 32, a part of the second tube 36 and a part of the third tube 38 are arranged. A holder 68 for holding the branch connector 32 is provided in the left area 54a2.

A part of the segment tube 28 passing through the central region 54a1 is arranged in the right region 54a3 (third region) of the upper surface 54a. In the right region 54a3, a segment pocket 74 that accommodates the plurality of closed tubes 28a of the segment tube 28 is provided.

Further, a tube holding portion 76 projecting above the upper surface 54a is provided on the radially outer side of the PPP bag pocket 58 and the drug solution bag pocket 60 in the unit set area 54. The tube holding portion 76 has an outer wall 78 that is continuous with the outer peripheral edge of the unit set area 54, and an inner wall 80 that protrudes inward from the outer wall 78 from the outer peripheral edge, and the second tube 36 is disposed between the outer wall 78 and the inner wall 80. Place it. The inner wall 80 extends from the left side of the drug solution bag pocket 60 to an intermediate position in the circumferential direction of the PPP bag pocket 58, and guides the second tube 36 to the PPP bag pocket 58.

Further, the unit set area 54 includes a slider 82 (pusher) that presses the blood bag 22 after centrifugation inside the blood bag pocket 56 in the radial direction. The slider 82 moves back and forth along the radial direction of the centrifugal drum 48 under the control of the controller 50 (see FIG. 1).

In the unit set area 54, the user holds the blood bag 22 storing the removed blood in the blood bag pocket 56, the empty PPP bag 24 in the PPP bag pocket 58, and the drug solution bag 26 storing the red blood cell preservation solution in the drug solution bag. Each is accommodated in the pocket 60. Then, in the unit set area 54, the blood removed from the blood bag 22 is centrifuged by the rotation of the centrifugal drum 48, and after the centrifugation, the slider 82 is advanced to press the blood bag 22. As a result, the PPP generated by the centrifugal separation in the blood bag 22 is transferred to the PPP bag 24, and the RBC remains in the blood bag 22 after the transfer of the PPP. Thereafter, the blood bag system 10 is taken out from the centrifugal transfer device 12 by the user, and the drug solution bag 26 is hung on a stand (not shown). As a result, the red blood cell preservation solution is supplied from the drug solution bag 26 to the blood bag 22, and the blood bag 22 is in a state of storing RBC (blood product) containing the drug solution.

As shown in FIGS. 3A and 3B, the clamp 43 of the blood bag system 10 is provided in the base portion 92 and the base portion 92 having the insertion hole 90 into which the second tube 36 and the third tube 38 are inserted. And an operation unit 94 that can be operated by fingers. That is, the clamp 43 is provided on the second tube 36 and the third tube 38. The base portion 92 is formed of a hard resin material into a rectangular plate shape. That is, the base portion 92 includes the first long side 96a and the second long side 96b extending parallel to each other, and the first short side 98a and the second short side 98b extending parallel to each other.

The insertion hole 90 includes a first insertion hole 100 in which the second tube 36 is inserted and a second insertion hole 102 in which the third tube 38 is inserted. The diameter of the first insertion hole 100 is larger than the outer diameter of the second tube 36. The diameter of the second insertion hole 102 is larger than the outer diameter of the third tube 38. The first insertion hole 100 and the second insertion hole 102 are arranged along the longitudinal direction of the base portion 92. The first insertion hole 100 and the second insertion hole 102 are separated from each other by the wall portion of the base portion 92.

The wall portion forming the first insertion hole 100 is provided with a first slit 104 for pressing the outer peripheral surface of the second tube 36 inward so that the second flow path 36a of the second tube 36 is closed. Has been. The first slit 104 extends from the first insertion hole 100 toward the side opposite to the second insertion hole 102 (first short side 98a). The first slit 104 extends linearly along the longitudinal direction of the base portion 92 (the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged).

The first slit 104 is formed narrower in the extending direction. The width dimension of the end portion of the first slit 104 on the first insertion hole 100 side (the maximum width dimension of the first slit 104) is smaller than the outer diameter of the second tube 36. The extension length of the first slit 104 is equal to or larger than the outer diameter of the second tube 36.

The wall portion forming the second insertion hole 102 is provided with a second slit 106 for pressing the outer peripheral surface of the third tube 38 inward so that the third flow path 38a of the third tube 38 is closed. Has been. The second slit 106 extends from the second insertion hole 102 toward the first insertion hole 100 side. The second slit 106 linearly extends along the longitudinal direction of the base portion 92 (the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged). The extension direction of the second slit 106 from the second insertion hole 102 is substantially the same as the extension direction of the first slit 104 from the first insertion hole 100.

The second slit 106 is formed narrower in the extending direction. The width dimension of the end of the second slit 106 on the second insertion hole 102 side (the maximum width dimension of the second slit 106) is smaller than the outer diameter of the third tube 38. The extension length of the second slit 106 is greater than or equal to the outer diameter of the third tube 38. The second slit 106 is formed so that the third tube 38 can return from the second slit 106 to the second insertion hole 102. That is, the second slit 106 is formed so that the third tube 38 returns from the second slit 106 to the second insertion hole 102 so that the third flow path 38 a of the third tube 38 can be opened.

The operation portion 94 is provided on the end portion (second short side 98b) of the base portion 92 in the direction opposite to the extending direction of the first slit 104 and the second slit 106. Specifically, the operating portion 94 is provided at the end of the second short side 98b where the second long side 96b is located. In other words, the operation portion 94 is located closer to the second long side 96b than the center of the base portion 92 in the lateral direction.

The operation portion 94 has a flat plate portion 108 and a non-slip portion 110 provided on at least one flat surface of the flat plate portion 108. The flat plate portion 108 extends from the second short side 98b of the base portion 92 to the side opposite to the first insertion hole 100 and the second insertion hole 102. The non-slip portion 110 has a plurality of convex portions 112 arranged along the longitudinal direction of the base portion 92. Each protrusion 112 extends along the lateral direction of the base 92.

The anti-slip part 110 is not limited to the example having the plurality of convex parts 112, and may have any configuration as long as it is possible to suppress slippage of fingers with respect to the operation part 94.

The clamp 43 includes the second tube 36 and the third tube 36 so that the second long side 96b (the operation portion 94) is located above the first long side 96a when the blood bag system 10 is set in the centrifugal transfer device 12. It is provided in the tube 38.

The blood bag system 10 according to this embodiment is basically configured as described above, and its operation will be described below.

As described above, in the blood bag system 10, the pretreatment unit is used at the time of blood collection by the user (healthcare worker) to remove the removed blood from the whole blood of the donor into the blood bag 22. Store. The blood bag 22 stores an appropriate amount of blood (400 cc, for example) according to the donor.

After that, the user separates the separation processing unit 16 of the blood bag system 10 from the preprocessing unit and sets it on the centrifugal transfer device 12 in order to centrifuge the removed blood. Blood bag 22 is inserted into blood bag pocket 56 of unit set area 54. The first tube 34 is arranged in the central region 54a1 of the upper surface 54a. The drug solution bag 26 is inserted into the drug solution bag pocket 60, and the PPP bag 24 is inserted into the PPP bag pocket 58. The branch connector 32 is set in the holder 68, and the clamp 43 is arranged near the holder 68 in the left area 54a2 of the upper surface 54a. Then, when the user closes the lid 62, the breaking portion 64 surely breaks the sealing member 40 and opens the first flow path 34 a of the first tube 34.

After setting the blood bag system 10, the centrifugal transfer device 12 rotates the centrifuge drum 48 under the control of the control unit 50 to remove the removed blood from the blood bag 22 into blood components having different specific gravities (PPP, RBC, etc.). Centrifuge. After this centrifugal separation, the centrifugal separation transfer device 12 presses the blood bag 22 with the slider 82. As a result, PPP having a low specific gravity flows out of the blood bag 22, and this PPP flows in the first tube 34, the branch connector 32, and the second tube 36 in order and flows into the PPP bag 24.

When the PPP is transferred from the blood bag 22 to the PPP bag 24, the centrifuge/transfer device 12 retracts the slider 82 so that the blood bag 22 can be taken out from the blood bag pocket 56. Then, the user closes each of the second flow path 36a of the second tube 36 and the third flow path 38a of the third tube 38 with the clamp 43.

That is, the user holds the operation section 94 with his/her fingers and pulls the operation section 94 so that the base section 92 moves to the operation section 94 side with respect to the second tube 36 and the third tube 38. Then, as shown in FIG. 3B, the second tube 36 inserted into the first insertion hole 100 is inserted into the first slit 104, and the third tube 38 inserted into the second insertion hole 102 is inserted into the second tube 36. It is inserted into the slit 106.

When the second tube 36 is inserted into the first slit 104, the second tube 36 is pressed radially inward by the wall portion forming the first slit 104 and is compressed and deformed into a flat shape. The second flow path 36a of 36 is closed. When the third tube 38 is inserted into the second slit 106, the third tube 38 is pressed radially inward by the wall portion forming the second slit 106 and is compressed and deformed into a flat shape. The third flow path 38a of 38 is closed.

Thereafter, as shown in FIG. 4, the user takes out the blood bag system 10 from the centrifugal transfer device 12 and suspends the drug solution bag 26 on a stand (not shown). Then, the third tube 38 is moved from the second slit 106 to the second insertion hole 102. That is, the third flow path 38a of the third tube 38 is opened. As a result, the red blood cell preservation solution in the drug solution bag 26 is supplied to the blood bag 22 through the third tube 38, the branch connector 32, and the first tube 34 by the action of gravity. At this time, the second tube 36 remains positioned in the first slit 104. That is, the second flow path 36a of the second tube 36 is maintained in the closed state. Therefore, the red blood cell preservation solution is prevented from flowing into the PPP bag 24. As a result, the blood bag 22 stores RBC containing the red blood cell preservation solution.

In this case, the blood bag system 10 and the clamp 43 according to this embodiment have the following effects.

The blood bag system 10 includes a first bag (blood bag 22) for containing blood, and a second bag for containing blood components obtained by centrifuging blood in the first bag (blood bag 22). A bag (PPP bag 24) and a third bag (chemical solution bag 26) containing the additive solution are provided. The first tube 34 connected to the first bag (blood bag 22) is the second tube 36 connected to the second bag (PPP bag 24) and the third tube connected to the third bag (chemical solution bag 26). 38 is connected via a branch portion (branch connector 32).

The blood bag system 10 includes one clamp 43 capable of closing the respective flow paths (the second flow path 36a and the third flow path 38a) of the second tube 36 and the third tube 38. The clamp 43 has a base portion 92 having an insertion hole 90 through which the second tube 36 and the third tube 38 are inserted. A first slit 104 for pressing the outer peripheral surface of the second tube 36 inward so that the flow path (second flow path 36a) of the second tube 36 is closed on the wall portion forming the insertion hole 90. And a second slit 106 for pressing the outer peripheral surface of the third tube 38 inward so that the flow path of the third tube 38 (third flow path 38a) is closed.

According to such a configuration, the second tube 36 and the third tube 38 are inserted into the insertion hole 90 formed in the base portion 92, and the first slit 104 and the second slit 106 are formed in the wall portion forming the insertion hole 90. Because of the provision of and, it is possible to efficiently close the respective flow paths (the second flow path 36a and the third flow path 38a) of the second tube 36 and the third tube 38 by one clamp 43.

The second slit 106 is formed so that the flow path (third flow path 38a) of the third tube 38 can be opened by returning the third tube 38 from the second slit 106 to the insertion hole 90.

With such a configuration, the flow path of the third tube 38 (third flow path 38a) can be easily closed and opened.

The insertion hole 90 includes a first insertion hole 100 in which the second tube 36 is inserted and a second insertion hole 102 in which the third tube 38 is inserted. The first slit 104 is provided in the wall portion forming the first insertion hole 100, and the second slit 106 is provided in the wall portion forming the second insertion hole 102.

With such a configuration, the second tube 36 and the third tube 38 can be easily inserted into the first slit 104 and the second slit 106, respectively.

The first slit 104 and the second slit 106 slide the base portion 92 in one direction with respect to the second tube 36 and the third tube 38, so that the second tube 36 is inserted into the first slit 104 and at the same time. The 3 tube 38 is formed so as to be inserted into the second slit 106.

With such a configuration, it is possible to effectively block the respective flow paths (the second flow path 36a and the third flow path 38a) of the second tube 36 and the third tube 38.

The extension direction of the first slit 104 from the first insertion hole 100 is substantially the same as the extension direction of the second slit 106 from the second insertion hole 102.

According to such a configuration, by sliding the base portion 92 in one direction with respect to the second tube 36 and the third tube 38, the second tube 36 and the third tube 38 are moved to the first slit 104 and the second slit. It can be easily inserted into each of 106.

Each of the first slit 104 and the second slit 106 extends along the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged.

According to such a configuration, by sliding the base portion 92 along the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged, the second tube 36 and the third tube 38 are moved to the first slit 104 and the first tube 104. It can be inserted into each of the two slits 106.

The clamp 43 has an operation portion 94 which is provided at an end portion of the base portion 92 opposite to the extending direction of the first slit 104 and the second slit 106 and which can be operated by fingers.

With such a configuration, the slide operation of the base portion 92 can be easily performed.

The operation section 94 has a flat plate section 108.

In the blood bag system 10, when the second flow path 36a of the second tube 36 is once closed by the clamp 43 after transferring the PPP in the blood bag 22 to the PPP bag 24, the second flow of the second tube 36 is performed in a later step. It does not open the path 36a. Therefore, the clamp 43 suppresses the second tube 36 from returning from the first slit 104 to the first insertion hole 100 in place of the first slit 104, and thus the first to fifth configuration examples described below. It may have slits 104a to 104e.

(First configuration example)
As shown in FIG. 5A, the first slit 104a according to the first configuration example includes a holding slit 120 that holds the second tube 36, and an intermediate slit 122 that is located between the holding slit 120 and the first insertion hole 100. including. The intermediate slit 122 extends linearly from the first insertion hole 100 toward the first short side 98a. The holding slit 120 extends linearly from the extending end of the intermediate slit 122 toward the first short side 98a. The slit width of the intermediate slit 122 is set to be the same as the slit width of the holding slit 120.

In this case, the first slit 104a includes a holding slit 120 that holds the second tube 36, and an intermediate slit 122 that is located between the holding slit 120 and the first insertion hole 100, and the slit width of the intermediate slit 122. Is approximately the same as the slit width of the holding slit 120. Therefore, the flow path of the second tube 36 (second flow path 36a) can be maintained in a closed state with a simple configuration.

(Second configuration example)
As shown in FIG. 5B, the first slit 104b according to the second configuration example includes an intermediate slit 124 instead of the intermediate slit 122 of the first slit 104a according to the first configuration example described above. The slit width of the intermediate slit 124 is narrower than the slit width of the holding slit 120.

In this case, the slit width of the intermediate slit 124 is smaller than the slit width of the holding slit 120. Therefore, it is possible to effectively prevent the second tube 36 from returning from the holding slit 120 to the first insertion hole 100.

(Third configuration example)
As shown in FIG. 5C, the first slit 104c according to the third configuration example includes an intermediate slit 126 instead of the intermediate slit 122 of the first slit 104a according to the first configuration example described above. The intermediate slit 126 is bent and extends (curved). In other words, the intermediate slit 126 extends in a curved shape (arc shape).

In this case, the intermediate slit 126 is bent and extends. Therefore, it is possible to effectively prevent the second tube 36 from returning from the holding slit 120 to the first insertion hole 100.

(Fourth configuration example)
As shown in FIG. 6A, the first slit 104d according to the fourth configuration example includes an intermediate slit 128 instead of the intermediate slit 122 of the first slit 104a according to the first configuration example described above. The

wall portions

129a and 129b forming the intermediate slit 128 (first slit 104d) are provided with a return suppressing portion 130 that suppresses the second tube 36 from returning from the holding slit 120 to the first insertion hole 100.

The return suppressing portion 130 has

convex portions

132a and 132b provided on the

wall portions

129a and 129b that form the intermediate slit 128 and face each other. The

convex portions

132a and 132b are located on the holding slit 120 side of the intermediate slit 128. The convex portion 132a projects from one wall portion 129a toward the other wall portion 129b. The convex portion 132b projects from the other wall portion 129b toward the one wall portion 129a. The convex portion 132a and the convex portion 132b are opposed to each other.

The convex portion 132a is formed in a tapered triangular shape. The convex portion 132a is provided with an inclined portion 134 located on the first insertion hole 100 side and a stopper portion 136 located on the holding slit 120 side.

The inclined portion 134 is inclined toward the side where the first insertion hole 100 is located toward the protruding end of the convex portion 132a. The stopper portion 136 extends substantially perpendicular to the extending direction of the holding slit 120. The convex portion 132b is configured similarly to the convex portion 132a. Therefore, the description of the configuration of the convex portion 132b is omitted.

In such a first slit 104d, the second tube 36 can move to the holding slit 120 from the first insertion hole 100 via the intermediate slit 128, overcoming the inclined portions 134 of the

convex portions

132a and 132b. On the other hand, the second tube 36 located in the holding slit 120 cannot ride over the stopper portion 136 of the

convex portions

132a and 132b.

In this case, the

wall portions

129a and 129b forming the first slit 104d are provided with the return suppressing portion 130 that suppresses the second tube 36 from returning from the first slit 104d to the first insertion hole 100. Therefore, it is possible to more effectively prevent the second tube 36 from returning from the first slit 104d (holding slit 120) to the first insertion hole 100.

The stopper 136 may be inclined toward the protruding end of the protrusion 132a on the side opposite to the first insertion hole 100. The shapes of the

convex portions

132a and 132b are not limited to the tapered triangular shape. The

protrusions

132a and 132b may be formed in a semicircular shape. The

convex portions

132a and 132b may be located on the first insertion hole 100 side of the intermediate slit 128. The return suppressing unit 130 may have only one of the protrusion 132a and the protrusion 132b and omit the other.

(Fifth configuration example)
As shown in FIG. 6B, the first slit 104e according to the fifth configuration example includes the holding slit 120 of the first slit 104a according to the first configuration example described above. The first slit 104e does not have the above-mentioned intermediate slit 122.

The

wall portions

141a and 141b forming the first slit 104e are provided with a return restraining portion 140 that restrains the second tube 36 from returning from the first slit 104e to the first insertion hole 100. The return suppressing portion 140 has

convex portions

142a and 142b provided on the

wall portions

141a and 141b facing each other that form the first slit 104e.

The

convex portions

142a and 142b are located at the ends of the first slit 104e on the first insertion hole 100 side. The convex portion 142a projects from one wall portion 141a toward the other wall portion 141b. The convex portion 142b projects from the other wall portion 141b toward the one wall portion 141a. The convex portion 142a and the convex portion 142b face each other. The

convex portions

142a and 142b are formed in a semicircular shape.

In this case, the first slit 104e has the same effect as the first slit 104d according to the fourth configuration example described above. Further, since the first slit 104e does not have the above-mentioned intermediate slit 122, the dimension of the clamp 43 in the longitudinal direction can be made relatively short.

(First modification)
Next, the clamp 43A according to the first modification will be described. In the clamp 43A according to the present modification, the same components as those of the clamp 43 described above are designated by the same reference numerals, and the description thereof will be omitted. The same applies to the clamp 43B according to the second modified example and the clamp 43C according to the third modified example, which will be described later.

As shown in FIG. 7, the clamp 43A according to the first modification includes a first slit 150 and a second slit 152 instead of the first slit 104 and the second slit 106 of the clamp 43 described above. The first slit 150 is different from the first slit 104 only in the extending direction from the first insertion hole 100. That is, the first slit 150 extends from the first insertion hole 100 toward the first short side 98a so as to be inclined toward the first long side 96a.

The second slit 152 differs from the second slit 106 only in the extending direction from the second insertion hole 102. That is, the second slit 152 extends from the second insertion hole 102 toward the first short side 98a so as to be inclined toward the first long side 96a.

With the clamp 43A according to the present modification, the user can easily pull the second tube 36 located in the first insertion hole 100 into the first slit 150 by pulling it up diagonally while holding the operation portion 94 with the fingers. The third tube 38 located in the second insertion hole 102 can be easily inserted into the second slit 152.

The shape of the first slit 150 of the clamp 43A according to this modification may be the shape of the first slits 104a to 104e according to the above-described first to fifth configuration examples.

(Second modified example)
Next, the clamp 43B according to the second modification will be described. As shown in FIGS. 8A and 8B, the clamp 43B has a rectangular base portion 154 and an operation portion 156 provided on one long side of the base portion 154. An insertion hole 90 (first insertion hole 100 and second insertion hole 102) is formed in the base portion 154. The wall portion forming the first insertion hole 100 is provided with a first slit 158, and the wall portion forming the second insertion hole 102 is provided with a second slit 160.

Each of the first slit 158 and the second slit 160 extends along a direction orthogonal to the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged (the lateral direction of the base portion 154). Specifically, the first slit 158 extends from the first insertion hole 100 toward the other long side (the side opposite to the operation portion 156). The shape of the first slit 158 is the same as the shape of the first slit 104 described above. The second slit 160 extends from the second insertion hole 102 toward the other long side (opposite to the operation portion 156). The shape of the second slit 160 is the same as the shape of the second slit 106 described above.

The operation portion 156 includes a flat plate portion 162 (support portion) extending from one long side of the base portion 154 in a direction opposite to the base portion 154, and a hook portion 164 provided at an extended end portion of the flat plate portion 162. Have. The hook portion 164 is for the user to hook his/her finger, and is curved in an arc shape from the extended end portion of the flat plate portion 162 to one surface side of the base portion 154. The hook portion 164 is located closer to the second insertion hole 102 than the center of the base portion 154 in the longitudinal direction. However, the position of the hook portion 164 in the longitudinal direction of the base portion 154 can be set arbitrarily.

In the clamp 43B according to this modification, each of the first slit 158 and the second slit 160 extends along the direction orthogonal to the direction in which the first insertion hole 100 and the second insertion hole 102 are arranged.

According to such a configuration, by sliding the base portion 154 along the direction orthogonal to the arrangement direction of the first insertion hole 100 and the second insertion hole 102, the second tube 36 located in the first insertion hole 100. Can be easily inserted into the first slit 158, and the third tube 38 located in the second insertion hole 102 can be easily inserted into the second slit 160.

The operation unit 156 has a hook portion 164 for hooking a finger. With such a configuration, the slide operation of the base portion 154 can be easily performed.

As shown in FIG. 8C, the clamp 43B according to the present modification may include an operation unit 156a instead of the operation unit 156. The operation portion 156a has a flat plate portion 168 having a hole 166 into which a user's finger can be inserted. The hole 166 is located substantially at the center of the base portion 154 in the longitudinal direction. However, the position of the hole 166 with respect to the longitudinal direction of the base portion 154 can be set arbitrarily. When such a hole 166 is provided in the flat plate portion 168, the same effect as that of the hook portion 164 is achieved.

The shape of the first slit 158 of the clamp 43B according to the present modification may be the shape of the first slits 104a to 104e according to the above-described first to fifth configuration examples.

(Third Modification)
Next, a clamp 43C according to the third modification will be described. As shown in FIG. 9, the clamp 43C has a base portion 172 formed with one insertion hole 170 through which both the second tube 36 and the third tube 38 are inserted. The base portion 172 is formed of a hard resin material into a rectangular plate shape. That is, the base portion 172 includes the first long side 174a and the second long side 174b extending parallel to each other, and the first short side 176a and the second short side 176b extending parallel to each other.

The insertion hole 170 is located at the center of the base portion 172 and extends in the longitudinal direction of the base portion 172. In order to press the outer peripheral surface of the second tube 36 inward so that the second flow path 36a of the second tube 36 is closed at one end of the base portion 172 (the end on the first short side 176a side). The first slit 180 is provided.

The first slit 180 extends linearly from the insertion hole 170 toward the first short side 176a. The slit width of the first slit 180 is smaller than the outer diameter of the second tube 36. The first slit 180 is provided substantially at the center of one end of the base portion 172 in the lateral direction.

The other end of the base 172 (the end on the second short side 176b side) presses the outer peripheral surface of the third tube 38 inward so that the third flow path 38a of the third tube 38 is closed. A second slit 182 is provided for this purpose.

The second slit 182 linearly extends from the insertion hole 170 toward the second short side 176b side. That is, the first slit 180 and the second slit 182 extend in the opposite directions from the insertion hole 170. The slit width of the second slit 182 is smaller than the outer diameter of the third tube 38. The second slit 182 is provided in the other end of the base portion 172 at substantially the center in the lateral direction.

The wall portion forming the insertion hole 170 is provided with a first guide portion 171a for guiding the second tube 36 to the first slit 180 and a second guide portion 171b for guiding the third tube 38 to the second slit 182. Has been. The first guide portion 171 a is formed such that one end portion (end portion on the first short side 176 a side) of the insertion hole 170 becomes narrower toward the first slit 180. The second guide portion 171b is formed such that the other end portion (end portion of the second short side 176b) of the insertion hole 170 becomes narrower toward the second slit 182.

In the clamp 43C according to this modification, the insertion hole 170 is one hole into which both the second tube 36 and the third tube 38 are inserted.

With such a configuration, the configuration of the clamp 43C can be simplified.

The first slit 180 and the second slit 182 extend in opposite directions from the insertion hole 170.

With such a configuration, the second tube 36 and the third tube 38 can be easily inserted into the first slit 180 and the second slit 182, respectively.

As the shape of the first slit 180 of the clamp 43C according to this modification, the shapes of the first slits 104a to 104e according to the above-described first to fifth configuration examples may be adopted.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

Claims

A first bag for containing blood, a second bag for containing a blood component obtained by centrifuging the blood in the first bag, and a third bag for containing an additive solution. A blood bag comprising: a first tube connected to the first bag, and a second tube connected to the second bag and a third tube connected to the third bag via a branch portion. A system,
One clamp capable of closing the respective flow paths of the second tube and the third tube is provided,
The clamp is
A base portion having an insertion hole through which the second tube and the third tube are inserted,
In the wall portion forming the insertion hole,
A first slit for pressing the outer peripheral surface of the second tube inward so that the flow path of the second tube is closed;
And a second slit for pressing the outer peripheral surface of the third tube inward so that the flow path of the third tube is closed.
The blood bag system according to claim 1, wherein
The first slit is
A holding slit for holding the second tube,
Including an intermediate slit located between the holding slit and the insertion hole,
The blood bag system, wherein the slit width of the intermediate slit is less than or equal to the slit width of the holding slit.
The blood bag system according to claim 2, wherein
The blood bag system, wherein the intermediate slit extends curvedly.
The blood bag system according to any one of claims 1 to 3,
The blood bag system in which the wall portion forming the first slit is provided with a return suppressing portion that suppresses the second tube from returning from the first slit to the insertion hole.
The blood bag system according to any one of claims 1 to 4, wherein
The said 2nd slit is a blood bag system formed so that the flow path of the said 3rd tube can be opened by returning the said 3rd tube from the said 2nd slit to the said insertion hole.
The blood bag system according to any one of claims 1 to 5,
The insertion hole is
A first insertion hole through which the second tube is inserted;
A second insertion hole through which the third tube is inserted,
The first slit is provided in a wall portion forming the first insertion hole,
The said 2nd slit is a blood bag system provided in the wall part which forms the said 2nd insertion hole.
The blood bag system according to claim 6, wherein
The first slit and the second slit allow the second tube to be inserted into the first slit by sliding the base portion in one direction with respect to the second tube and the third tube, and A blood bag system, wherein a third tube is formed to be inserted into the second slit.
The blood bag system according to claim 7, wherein
The blood bag system in which the extension direction of the first slit from the first insertion hole is substantially the same as the extension direction of the second slit from the second insertion hole.
The blood bag system according to claim 8, wherein
The blood bag system in which each of the first slit and the second slit extends along a direction in which the first insertion hole and the second insertion hole are arranged.
The blood bag system according to claim 8, wherein
The blood bag system in which each of the first slit and the second slit extends along a direction orthogonal to a direction in which the first insertion hole and the second insertion hole are arranged.
The blood bag system according to any one of claims 8 to 10, wherein:
The blood bag system, wherein the clamp has an operation part which is provided at an end of the base part in a direction opposite to the extending direction of the first slit and the second slit and which can be operated by fingers.
The blood bag system according to claim 11, wherein:
The said operation part is a blood bag system which has a flat part.
The blood bag system according to claim 12, wherein:
A blood bag system in which holes for inserting fingers are formed in the flat plate portion.
The blood bag system according to claim 11, wherein:
The blood bag system, wherein the operation part has a hook part for hooking a finger.
The blood bag system according to any one of claims 1 to 5,
The blood bag system, wherein the insertion hole is one hole into which both the second tube and the third tube are inserted.
The blood bag system according to claim 15, wherein
The blood bag system, wherein the first slit and the second slit extend in opposite directions from the insertion hole.
A first bag for containing blood, a second bag for containing a blood component obtained by centrifuging the blood in the first bag, a third bag for containing an additive solution, and one end Is connected to the first bag and the other end is connected to a branch portion, a second tube connecting the branch portion and the second bag, a branch portion and the third bag. A blood bag system comprising a third tube to be connected, which is a clamp capable of closing the respective flow paths of the second tube and the third tube,
A base portion having an insertion hole through which the second tube and the third tube are inserted,
In the wall portion forming the insertion hole,
A first slit for pressing the outer peripheral surface of the second tube inward so that the flow path of the second tube is closed;
A second slit for pressing the outer peripheral surface of the third tube inward so that the flow path of the third tube is closed, and the clamp.